You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.4 KiB
90 lines
2.4 KiB
/* |
|
* Copyright (c) 2014 MediaTek Inc. |
|
* Author: YongWu <yong.wu@mediatek.com> |
|
* Honghui Zhang <honghui.zhang@mediatek.com> |
|
* |
|
* This program is free software; you can redistribute it and/or modify |
|
* it under the terms of the GNU General Public License version 2 as |
|
* published by the Free Software Foundation. |
|
* |
|
* This program is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
* GNU General Public License for more details. |
|
*/ |
|
#ifndef MTK_IOMMU_PLATFORM_H |
|
#define MTK_IOMMU_PLATFORM_H |
|
|
|
#include <linux/io.h> |
|
#include <linux/clk.h> |
|
#include <linux/err.h> |
|
#include <linux/mm.h> |
|
|
|
enum { |
|
M4U_ID_0 = 0, |
|
M4U_ID_1, |
|
M4U_ID_ALL |
|
}; |
|
|
|
#define MTK_IOMMU_PGT_SZ SZ_1M /*2M err*/ |
|
#define MTK_PROTECT_PA_ALIGN 128 |
|
#define MTK_IOMMU_LARB_MAX_NR 8 |
|
#define MTK_IOMMU_PORT_MAX_NR 100 |
|
#define MT2701_IOMMU_PAGE_SIZE 0x1000 |
|
|
|
struct mtk_iommu_info { |
|
void __iomem *base; |
|
void __iomem *l2_base; |
|
int irq; |
|
int larb_nr; |
|
unsigned int iova_base; |
|
size_t iova_size; |
|
dma_addr_t pgt_basepa; |
|
struct device *dev; |
|
struct clk *bclk; |
|
dma_addr_t protect_base; |
|
unsigned int *protect_va; |
|
const struct mtk_iommu_cfg *imucfg; |
|
}; |
|
|
|
struct mtk_iommu_domain { |
|
unsigned int *pgtableva; |
|
dma_addr_t pgtablepa; |
|
spinlock_t pgtlock; |
|
spinlock_t portlock; |
|
struct mtk_iommu_info *piommuinfo; |
|
struct iommu_domain *domain; |
|
}; |
|
|
|
/*hw config*/ |
|
struct mtk_iommu_cfg { |
|
unsigned int l2_offset; |
|
unsigned int m4u_port_in_larbx[MTK_IOMMU_LARB_MAX_NR]; |
|
unsigned int m4u_port_nr; |
|
|
|
/*hw function*/ |
|
int (*dt_parse)(struct platform_device *pdev, |
|
struct mtk_iommu_info *piommu); |
|
int (*hw_init)(const struct mtk_iommu_info *piommu); |
|
void (*hw_deinit)(const struct mtk_iommu_info *piommu); |
|
int (*map)(struct mtk_iommu_domain *mtkdomain, unsigned int iova, |
|
phys_addr_t paddr, size_t size); |
|
size_t (*unmap)(struct mtk_iommu_domain *mtkdomain, unsigned int iova, |
|
size_t size); |
|
phys_addr_t (*iova_to_phys)(struct mtk_iommu_domain *mtkdomain, |
|
unsigned int iova); |
|
int (*config_port)(struct mtk_iommu_info *piommu, |
|
int portid, bool enable); |
|
irq_handler_t iommu_isr; |
|
|
|
void (*invalid_tlb)(const struct mtk_iommu_info *piommu, |
|
unsigned int m4u_id, int isinvall, |
|
unsigned int iova_start, |
|
unsigned int iova_end); |
|
|
|
void (*clear_intr)(void __iomem *base); |
|
}; |
|
|
|
extern const struct mtk_iommu_cfg mtk_iommu_mt2701_cfg; |
|
|
|
#endif
|
|
|